Variable-frequency speed regulation system and method of high-speed permanent magnet motor
A permanent magnet motor, variable frequency speed regulation technology, applied in control systems, control generators, vector control systems, etc., can solve the problem of poor reliability and anti-electromagnetic interference ability, misleading switching of the inverter bridge switch, and damage to the switch, etc. problem, to improve the anti-interference performance and current quality, and solve the effect of increasing current harmonics
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[0020] The technical solutions of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0021] 1 The overall structure of the system
[0022] The present invention is a high-speed permanent magnet motor frequency conversion speed regulation system and its control based on a voltage-type Z-source inverter. The high-speed permanent magnet motor frequency conversion speed regulation system includes an L filter, a diode rectifier, a Z-source inverter, High-speed permanent magnet synchronous motor, controller, drive module, voltage and current Hall detection module, stator current Hall detection module, photoelectric encoder angle measurement module, overvoltage and overcurrent protection module, such as figure 1 shown. The L filter is connected to the power grid and the diode rectifier, which is used to filter the grid-connected current and reduce the harmonic content of the grid-connected current...
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